Science Revision- Plant parts

I have done up a summary on the Plant parts to aid your revision in Science.
If you do spot any mistakes or you would like to bring up any points for discussion, please inform me when we are back in school.

Plant and their parts

1. Plants are living things and they are made up of many parts.
2. The parts of a plant are roots, stems, leaves, flowers, fruits and seeds. These parts combine to form a system.
3. Each plant part has a function.
4. These parts work together to help the plant make food, grow and reproduce.

Functions of Roots
1. Takes in water and mineral salts from the soil
2. Holds the plant firmly to the ground

Functions of Stem
1. Supports or holds up the branches and leaves to get sunlight
2. Hold the tree upright
3. Carries food, water and mineral salts to all parts of the plants

Function of Leaf
1. Makes food for the plant by trapping sunlight
2. They allow the plant to exchange gases with the surrounding air

Functions of Flower
1. Reproductive structure of a plant that enables the plant to bear fruits and seeds
2. Attract pollinators

Function of fruit
1. Contains and protects the seeds

Function of seed
1. Germinates to produce new plants

Question: Why are the leaves of plants usually spread out?
Answer: They are usually spread out so that they can get as much sunlight as possible to make food for the plant.


Leaves
Leaves make food for the plant by trapping light energy from the Sun.
There are tiny opening openings in the leaf called stomata to help plants take in and give out gases.

*Do learn how to label the parts of a leaf.

Stem
Some plants have stems that grow straight up and they are strong while some plants have weak stems that climb up other plants for support. Some plants creep along the ground.

Therefore, those plants with weak stem will climb higher up the support (if they are present like a straight stick) to support the leaves up to get sunlight to make food.

Some food is stored in the stems of the plants like potato, ginger and sugercane.

Roots
Some roots store food for the plant like carrot, turnip and sweet potato.

Though it is true that roots of most plants grow underground, some plants do have roots that grow above the ground to get more oxygen like orchid, mangroves.

Interesting facts:
Some red or purple leaves do contain chlorophyll (the green pigment in leaves that aids photosynthesis). It's just that they contain a higher percentage of other plant pigments which masks the small percentage of chlorophyll and cause them to appear red or purple.